Corrugated culvert.



RJ. FELDT. COERUGATBD GULVERT. APPLIGATION FILED AUG. 29, 1910.

977,945, I v Patented Decf, 1910.

wmxsjfs To all whom 'it I I 'connoeiifwnn cULvEn-af.

' S'pecification of Letters gaten-t.

i Be it known-that I, FERDI'NANn J. FiiLDi-r,

i -a citizenof the 'United States,- residi'ng at ,Peoriznin the county off-Peoria 4and-State of Illinois, have invented certain new Zand useful Improvements in Corrugated-Culverts,

of which' the following is-a specification.

yinvention relates to sheetmet-al culvert u nitingmeans.

The ob'ectof my invention is to provide a stable joint effective against lateral pressure to prevent. rupture of the joints which results in sagging andthe forming lof pockets or depressions, in which Water -will stand propped and u -clainp. v Fig'u? is a sectional'vie-W, of the and incidentallyto stiften the combined sections, so that they Will not have tozbe l ined' A up when 'laid' lin the trench: .y 4My invention consists in forming the cul# vert sections ina manner'. that their meeting ends unite in4 a stiff ljoint 'anda'pplying areinforcing ring vagainst lateral pressure and'4 locking means.-

. Referring to. thedraWi'ngs-Figurea plan view of culvert sections. Fig. 2 is an Fight is ag cross sectional -view on the'line .fr bf Fig. Fig. 5 is aside-elei vation of -culvertsections, showing-a clamp applied. l' Fig. 6, is a sectional View of a same asatFig. 5. v- I ii the' drawings, 2 are culvert sections; 3 is "aiguard yring adapted fto be applied to yexposed terminal .ends ofthe completel 'culvert; t is a. straight terminal end of oneof the. sections adapted-'t enter the adjacent sections; isV .the terminal end of one Asection adapted to'embrace end portionl, and

is formed straight" `with the exception that .it is provided- With-the circumferential coi'- rug'ation 16, adapted to reinforce the. joint,- and to' form a seat for the Vround 'ring .Whichprovides vas a reinforcement as a A stiiener and.to provide'a substantial support for tlie'boltsv 8,. Wliicli are-applied to unite' the parts. The ring T is placed in position in seat 6, when the section is formed and hence is a permanent part thereof. The lower face of ring 7 1s flat and lies in -thejsain'e planevvith 'thel lower 'surfac'jj-of to the entranceof extension Patented Deer-63;' 191e..

extension 5, and hence' offers rio-.obstruction In applying my invention, the ring having .been properly secured -in yplace by being placed in s'eat 6, when the s ections are being.

formed into cylindrical shape orjbefore the end portion of the' longitudinal' cylinder vv seam is closed, the extension 4 is lcaused to enter' extension 5, asbest shown in Fig. '3; then the'boltsS are inserted,-the concaved l Washer 9 applied land the nuts screwed" 'down tol drawr'th'e parts together', the jointwill. be

formed complete, stiff and. susceptible for .maintaining tlieassembled culvertv sections in a horizontal alined relation that will not permit sagging. when thrown in the trench.

Aand will withstand great lateral pressure,

making the joint as strong as the main bodyr 1 of the sections.

a, are clamp sections adapted to beap'plied to unite long culvert 'sections made up of i and joined in the manner-previously describedfand lare'shapedto 'embraceat least l one of the terminal corrugatio'ns ofmeeting sections as wellas the intermediate ring seatcorrugation; Zi are ang'ed plates adapted to be vengaged by bolts to'be drawn together' to i vided witlrintertelescoping meeting ends,4

the entering portion of one section formed .straight and the receiving portion 4Straight with a circumferential cori-ligation at a point intermediate its length, a perforated ring seated in-'the corrugation in the receiving ond, concaved washers and bolts' and nuts for Securing the parts tqgethei'` substantially as shown. 4In combination `with circumterentially ioo vided with intertelescoping meeting ends,

' forted' ring secured in-the seat, coneaved' washers, and bolts und nuts or the llike forA securing the parts v,together in4 the' relation shown, substantially as described. y

- `Iii t-'estixinony rwhereof I'-ix my signaiur'e '1n presenceV of two Witnesses. v

v IFERDINND J. 'FELD'Iy Witnesses:

A. B. FINK, ,W. V, IEFFT.

cevirig portion having a ring seat, of a per- 

